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  <title>Redefine a constant</title>
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  <div id="layout-content"><div id="function.uopz-redefine" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">uopz_redefine</h1>
  <p class="verinfo">(PECL uopz 1, PECL uopz 2, PECL uopz 5, PECL uopz 6, PECL uopz 7)</p><p class="refpurpose"><span class="refname">uopz_redefine</span> &mdash; <span class="dc-title">Redefine a constant</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.uopz-redefine-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>uopz_redefine</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$constant</code></span>, <span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">$value</code></span>): <span class="type">bool</span></div>

  <div class="methodsynopsis dc-description"><span class="methodname"><strong>uopz_redefine</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$class</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$constant</code></span>, <span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">$value</code></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
 Redefines the given <code class="parameter">constant</code> as <code class="parameter">value</code>
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.uopz-redefine-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
<code class="parameter">class</code></dt>

    <dd>

     <p class="para">
 The name of the class containing the constant
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">constant</code></dt>

    <dd>

     <p class="para">
 The name of the constant
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">value</code></dt>

    <dd>

     <p class="para">
 The new value for the constant, must be a valid type for a constant variable
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.uopz-redefine-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.uopz-redefine-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-631">
   <p><strong>示例 #1 <span class="function"><strong>uopz_redefine()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />define</span><span style="color: #007700">(</span><span style="color: #DD0000">"MY"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">uopz_redefine</span><span style="color: #007700">(</span><span style="color: #DD0000">"MY"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1000</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">MY</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
1000
</pre></div>
   </div>
  </div>
 </div>



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